SKETCH OF CHARLES HENRY HITCHCOCK. 267 



he was elected professor of geology in Lafayette College, where he 

 gave short courses of instruction to five successive classes. In 1868 

 he was called to the chair of geology in Dartmouth College, a posi- 

 tion which he still occupies, receiving a year's leave of absence for 

 1898-'99 in consideration of thirty years of service. He taught 

 geology and zoology as a provisional professor at Williams College 

 in 1881, and in the following year in the Virginia College of Agri- 

 culture and the Mechanic Arts, Blacksbury. He received the de- 

 gree of M. A. in course at Amherst in 1859, the honorary degree 

 of Ph. D. from Lafayette College in 1870, and that of LL. D. from 

 Amherst College in 1896. 



Professor Hitchcock has been connected with the American 

 Association for the Advancement of Science since 1856, and a nearly 

 constant attendant upon its meetings and participant in the pro- 

 ceedings. He is a member of local scientific societies in Portland, 

 Me., Boston, Mass., !New York, Philadelphia, and St. Louis, and 

 also of the Imperial Geological Institute of Vienna. He ' was 

 one of the most prominent movers in the inception and early his- 

 tory of the Geological Society of America, and had much to do with 

 the organization of the International Congress of Geologists, and with 

 the preparation of special reports for the several meetings between 

 1876 and 1890. The handsome geological map of small scale com- 

 piled for the United States was prepared by him and published in 

 the Transactions of the American Institute of Mining Engineers 

 (1887), to illustrate the nomenclature and color scheme of the Inter- 

 national Congress. 



Professor Hitchcock is best known to many by his geological 

 maps. The first efforts at mapping the geology of the United States 

 were made independently by Edward Hitchcock and Jules Marcou 

 in 1883 — the work of Mr. Marcou extending only to the plains. 

 Prof. H. D. Rogers, five or six years later, prepared a map for John- 

 ston's Physical Atlas. In 1872 Prof. C. H. Hitchcock and Prof. 

 ~W. P. Blake compiled a map for the ninth census of the United 

 States, and for R. W. Raymond's report upon the mineral re- 

 sources of the country. The success of his small scale map led Pro- 

 fessor Hitchcock to undertake the preparation of a map on a scale 

 of twenty-five miles to the inch for the whole country. For this he 

 consulted every work that had been printed upon the geology of the 

 United States, and obtained the privilege of using many unpublished 

 data collected by geologists of States and Territories in which the 

 work had never been carried to actual completion. The map pre- 

 pared by the General Land Office was used as the basis for the geo- 

 logical coloration, and the work appeared in 1881, of a size adapted 

 to use in the classroom. Its compiler has never seen any criticism of 



